Dambusters 10mile
Silent Valley, Down
8 Aug 2026
⚠ Start times change frequently. Always check with race organiser or their website for this year's confirmed start time before travelling.
Course map
Confirmed by race organiser
Elevation profile
About this race
The Dambusters 10 Mile is a road and trail race organised by Born 2 Run Events, held at Silent Valley Mountain Park in Annalong, County Down, within the Mourne Area of Outstanding Natural Beauty. The course starts and finishes at the Silent Valley Mountain Centre and takes runners out through the dramatic glacial valley on road and path surfaces, surrounded throughout by the panoramic mountain scenery of the Mournes. The Silent Valley reservoir, constructed in the early twentieth century, and the famous Mourne Wall form iconic landmarks along the way. Running shoes are suitable for all terrain on the course. Two water stations are provided for the 10 Mile, and all finishers receive a Dambusters medal. The event also includes 10k and 5k distances, all starting from the same venue. With its stunning mountain setting, the Dambusters has become one of the most popular and distinctive summer races on the Northern Ireland running calendar, attracting a strong field each year.
Course profile & record eligibility
World Athletics record-eligibility rules cap net elevation loss at 1m per km of race distance, and require the start and finish to be no more than 50% of the race distance apart — both meant to stop a course gaining an unfair edge from downhill grade or a point-to-point tailwind. This is based on this course's recorded elevation and GPS data, not an official measurement or certification.